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Finding the Fourth Proportional to 119,540.84, 179,341.50 and 85,845.56

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Solution

The fourth proportional to 119,540.84, 179,341.50 and 85,845.56 is: 128,790.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,540.84 : 179,341.50 = 85,845.56 : x
  2. Step 2: Convert to fraction form
    119,540.84/179,341.50 = 85,845.56/x
  3. Step 3: Cross multiply
    119,540.84x = 179,341.50 × 85,845.56
  4. Step 4: Simplify right side
    119,540.84x = 15,395,671,498.74
  5. Step 5: Solve for x
    x = 15,395,671,498.74/119,540.84
  6. Step 6: Final answer
    x = 128,790.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.